Spring switch with handle



A. 2, 1938. s. a. DU BRIE SPRING SWITCH WITH HANDLE 2 Sheets-Sheet 1 Filed Dec. 2, 1936 w-niEEJ I ENT R.

ATTORNEY Au 2,, 1938. s. R. DU 5R1:

SPRING SWITCH WITH HANDLE '2 Sheets-Sheet 2 Filed Dec. 2, 1936 E i E IVENTOIF ATTORNEY.

Patented Aug. 2, 1938 a U NIT E STATES; NT OF Fl C E 2,125,432. SPRING swrron HANDLE. Stanley R.- nn' Brie, Detroit, Mich. Application ember S ria F1 I i Claims. (01. 290-76) This application relates to an im rovement in tively.. This lug I 8 serves as a stop, both in electric switches and more particularly toa novelholding the parts together, and in regulating their construction in a spring switch. The purpose movement-inthe operation of switching'as will of the invention is to provide a simple construcate app The actuator is made. ll 3T tion and easy operation. This purpose is accomshape. and at the ends of thetop bar are recesses plished by so shaping the parts that they are ,.e.ache a te to retain n -1 I- the held together by being assembled-into each other flat springs 231 whose other end is retained in a in sucha manner that very few screws or other reeess Of s ide l The ears 25 at the ends fasteningsare required. A further object is to of t p ar r fi f o e re ai n provide a switch in which a strongpositive snapportion of. the actuator ha h s 10 ping action may be obtained in 'making. and sembled, ey l be in a. ine with slide II; and breaking the electric contacts. t the sp m y be installed wit their Another object; is: to provide a. switch which x s n one s ra line? ther n s maybeadapted-to, beoperated by an automatic 23 are formed with notches in their ends so that device controlling pressure or.a -related, 'function y W ll re ai in engagement t es e in a, w 3;ter 01: air pumping gy ,g t; en EQI this 1e3 22 and 24. At the other, 01 IOWGI, End Of, the son a relatively Small: switchds providedvwith'pa slide. H is mounted, by means of an insulating relatively large handle. block, a ac carrying p Inrde t nhan mothth appearancgan d The base land, the parts carried by it are the safety, of the pr sentwitchn is nca e mwnted in a bOX, cabinet, medeofiins-ll- 20 in a cabinet. made of insulating material; lating at ial. su h a hard rubber a me de other objects and. features will} become ap plastic. At e lower end. of the cabinet are parental those. skilled in the artu x j electrical connectors l3 which support the station of. the following detailedldescription 0 1131. 11 tionely Contact p in s a apted tobe. met y embodiment of. the invention; which-is; to. beread c n ts i by t spring with reference'totheaccompanying drawings. At One S de. o b S a S k lip-p r 30 In these drawings; 7 which serves as a fulcrum for the bearing Slof Fig; lisa view of;the switch inrits cabinet and handle 1- In the end of handle there is min 1f; it anotch 33 which engages the neck 34 of a finger Eigzisasimilar viewintheon position; r. k -up from the member I The handle 30 Fig. 3is aside view in the directionof the arrow- 32 1S retalned on the Pivot means of Fig. 1; f" pinili; i

railis atop view of. the switch per se; Operation; 5 is a Section 011 lines of 1 with The switch is operated in the following man- 35 some par s r OY ner: When the end 3'! of the handle 32 is moved 35 F 6 s a s on llnes of f e- 1; downward from the position of Fig. 1, it slides F 1s a s n 0n e f H the actuator l2 upwardly by means of the finger Fig- 8 is a v e o part of the switch mechanism; 35. The upward movement of the part l2 raises F g- 9 s a exploded View Showing the Parts the outer ends of springs 23, thus deflecting the 40 that go to e p the Switch meehanismsprings until that point is reached at which both 40 Construction gr lilds oi.f both springs 23 kare a straight line.

is, 0 course, occurs w en e poin s of su Refer1ng to P drawmgs, 1t W111 be f that port of the springs, i. e., the pivotal recesses 2 2 the switch consists of a base ID on which are and 24 he in a Straight line, or, in other Words,

5 slideably mounted a contact carrying slide II and when in the position shown in Fig 1 the hor1 a Slide actuator The base Fairies 9 zontal plane containing the pivots in recesses 22 fingers l4 and whlch e formed Integral wlth is brought into coincidence with the horizontal e base, the fingers bemg formed the top plane containing the pivots in recesses 24. Until of the base, and the lower ones l5 being struck this point is reached the tendency of the Springs up therefrom near the center. In the fingers I4 is t push th slide ll upwardly. But at the in- 50 and 15 are grooves Which retain the Sliding stant that this point is passed, the springs react parts II and I2. In back of the base I0 is a to push the slide II downward and the actuator smaller plate I! whose bent-up lug l8 projects l2 upward. Since it is so arranged that after a through a hole l9 in plate III and through the very slight additional upward movement of actuholes 20 and 2! in the parts I I and i2 respecator l2 its further movement is arrested by the 55 arrival of finger 35 against the stop I8, the force of the energy in the springs is permitted to be used in pushing the slide l l downward to make an electric contact between the points 29. The parts are so proportioned that when a contact has been made and spring 21 has been put under some deflective tension, the upper surface of hole 20 in slide ll comes into contact with stop [8, bringin the parts to rest.

In the reverse direction of operation a similar action takes place. When the handle end 3'! is pushed upward to urge part l2 downward it defleets the springs 23 until that point is againl tact. It will be noted that due to the deflection of spring 2'! in making contact, and due. to the-' resultant reaction of the spring in returning to normal positien as soon as slide II begins to move upward, a sliding, or wiping, action is'ob tained between the contact points when they separate. I

It will also be noted that the springs 23 may be made of a suitable stiffness to secure a strong reaction, and yet the force required to operate the switch handle 32 need not be relatively great. And this advantage is obtained by the provision of approximately a threeto one ratio of leverage in the switch handle.

An embodiment of the invention now having been described, referencewili be had to the fol-' lowing claims for a determination of the scope of the invention.

I claim 1. In a switch, two slideably mounted rigid parallel plates arranged adjacent each other, one over the other, means for retaining the plates'in the switch and constructed to provide guides. for the plates as they slide lengthwise, the plates being relatively slidable on each 'other,- the-'first of said plates having rigidarms extending laterally therefrom, leaf springs connecting the ends of the arms to' the second plate, the latter having a contact thereon, and a handle for sliding the first plate, movement of such plate beyond" theover center po'sitions of the springs'causing snap sliding movement of the second plate and consequent movement of the contact thereon into and out of its two positions.

2. In a switch, two slideably mounted rigid parallel plates arranged adjacent each other,

one over the other, means for retaining the plates in the switch and constructed to provide guides for the plates as they slide lengthwise, the plates being relatively slidable on each other, the first of said plates being T shaped and having rigid arms extending laterally therefrom leaf springs connecting the ends of the arms to the second plate, the latter having a contact thereon, and a handle for sliding the first plate, movement of such plate beyond the over center positions of the springs causing snap sliding movement of the second plate and consequent move- -'-'ment of the contact thereon into and. out of its two positions.

3. In a switch, a sheet metal base plate having four tongues bent therefrom and arranged with pairs of facing edges, each having two notches 'therein, a sliding plate between the tongues having its edges in four notches of the four tongues, a second sliding plate between the tongues and alined with the first sliding plate and also having its edges in four notches of the four tongues, the two sliding plates having'registering slots, a tongue in said slots forming a bearing and stop for'the sliding plates, a tongue bent up from the second sliding plate, a handle having a slotted end receiving the latter tongue and thus pivotally connected to the second sliding plate, and a tongue bent up from the base plate, the handle having a slot receiving the latter tongue and thus pivotally mounted on the base plate.

4. In a switch, a sheet metal base plate having four tongues bent therefrom and arranged with pairs of facing edges, each having two notches therein, a sliding plate between the tongues having its edges in four notches of the four tongues, a second sliding plate betweenjthe tongue and alined with the first sliding plate and also having its edges in four notches of the four tongues, the two sliding plates having registering slots, a tongue in said slats forming a bearing and stop for the second sliding plate, a handle having a slotted and receiving the latter tongue and thus 'pivotally connected to the second sliding plate, and a tongue bent up from the base plate, the handle having a slot receiving the latter tongue and thus pivotally mounted on the base plate, the second sliding plate having laterally'extending arms, and leaf springs connecting such arms to the end of the first sliding plate.

STANLEY R. DU BRIE.

ing plates, a tongue bent up from the 

